Zophar (L:EBC) vs. Souji Seta (P4) - No P4, but assuming you let Zophar's mega-damage be damage there's really no way for Souji to win, right? Even if it's ID, then Zophar has got multiple elements of attack that Souji probably can't all block at once, as well as some magic which I presume to be non-elemental, which would render the status hype irrelevant? Even with only two hands, Zophar still easily has better than a OHKO. Seems like an uphill fight for Souji.
Kary (FF1) vs. Lede (FFT) - Except in the Corneria Castle Roof version of this fight, where Kary has to kill Lede before stupid guest Garland runs to his death. Not that I'm bitter or anything.
Yulie Ahtreide (WA4) vs. Ashton Anchors (SO2) - Came up mildly before in Yulie vs. Setzer, but I don't respect Yulie's Sacrifice->Heal on double turns at all. Especially against opponents from real-timeish systems that would murder her if she tried that with a quick basic physical. With Yulie relying on her physical for damage, Ashton has more time to get hope for some luck in dizzying Yulie. And that's assuming he doesn't instantly OHKO.
Jin Uzuki (XS2) vs. Alonso (G3) - Yeah, this is where Jin needs his XS3 form, which gives a righteous wupping to Alonso. I'd be tempted to vote XS2 Jin as well... except that Alonso has that equip he gets that instantly changes him from the slowest of your 4 party members to the fastest until he leaves. Man. (So even if Alonso only 3HKOs XS2 Jin, he's going first anyway.)